212 Section 2 Drafting Techniques and Skills
1. Draw a horizontal line 3″ long. Mark the ″
ends with vertical marks. Bisect the line
using the triangle method.
2. Draw a horizontal line of any convenient
length. Bisect the line using the compass
method or the
Circle
command.
3. Draw a line at any convenient angle.
Construct another line 1″ from it and ″
parallel to it. Use the triangle and T-square
method or the Parallel object snap.
4. Draw a line at any convenient angle.
Construct a perpendicular to it from a
point not on the line using the triangle and
T-square method or the Perpendicular
object snap.
5. Draw a line of any convenient length and
angle. Divide the line geometrically into
seven equal parts.
6. Lay out an angle of any convenient size.
Bisect the angle.
7. Transfer the angle in Problem 6. Rotate
the angle approximately 90° in the new
location.
8. Draw a horizontal line. Construct a perpen-
dicular to the line.
9. Construct a triangle given the following:
Side AB = 3 1/4″, Angle A = 37°, Angle B = 70°. ″
10. Construct a triangle given the following:
Side AB = 3″, Side BC = 1 1/4″, ″ and ″
Side CA = 2 1/8″. Measure each angle and ″
add the three together. If your answer is
180°, you have measured accurately. If not,
check your measurements again.
11. Construct a triangle given the following:
Side AB = 1 1/2″, Side AC = 2″, ″ Angle A = 30°. ″
12. Construct an equilateral triangle given
Side AB = 2 3/4″.
13. Draw a 1 1/2″ line inclined slightly ″
(approximately 10°, but do not measure)
from horizontal. Using this line as the first fi
side, construct a square.
14. Draw a circle 2 1/2″ in diameter in the cen- ″
ter of one of the four sections of the sheet.
Inscribe the largest square possible within
the circle.
15. Construct a pentagon within a 2 1/2″ diam- ″
eter circle.
16. Construct a hexagon measuring 3″ across ″
the corners.
17. Construct a hexagon with a distance of
2 1/2″ across the flats ″ when measured fl
horizontally.
18. Construct an octagon with a distance
across the flats of 2 1/2″. fl
19. Construct a seven-sided regular polygon
given the length of one side as 1 1/4″.
20. Draw a pentagon 2″ across the corners in ″
the upper left-hand portion of one section
of a sheet. Transfer the polygon to the lower
right-hand corner in a 180° rotated position.
21. Without measuring, place three points
approximately 1 1/2″ from the approximate ″
center of the sheet section. Place the points
at approximately the three, six, and ten
o’clock positions. Construct a circle to pass
through all three points.
22. Draw a semicircular arc 1 1/2″ in radius. ″
Locate the center of the arc.
23. Draw a circle 2 1/2″ in diameter. Construct ″
a tangent at the approximate two o’clock
position.
24. Draw a 2″ diameter circle in the lower ″
left-hand portion of a sheet section. Draw a
line approximately 1″ above it and inclined ″
toward the upper right corner. Construct a
circular arc with a radius of 1″ tangent to ″
the circle and straight line.
25. Draw two nonparallel lines. Construct a cir-
cular arc of any convenient radius tangent
to the two lines.
26. Draw a circle 1 1/2″ in diameter. Obtain the ″
length of the circumference of the circle by
using the construction method, the equal
chord method, the mathematical method,
and the
List
command (if available). Lay off
each distance. Compare the results.
27. Draw a 2 1/4″ diameter circle. Determine ″
the length of the arc from the six o’clock
position to the four o’clock position.
28. Draw a 2 1/2″ diameter circle. Start at the six ″
o’clock position and lay off 1″ along the arc. ″